What Is Generative Engine Optimisation (GEO)? A Complete Guide.
If you've noticed AI tools like ChatGPT, Google AI Overviews, Gemini or Perplexity answering questions directly - recommending businesses, comparing products, summarising services - without sending the person to a list of websites, you've already seen why Generative Engine Optimisation exists.
Generative Engine Optimisation (GEO) is the practice of optimising your online presence so these AI systems can understand, trust and recommend your business when generating an answer - rather than optimising purely to rank a webpage in a traditional results list.
It's a relatively recent branch of SEO, and the terminology is still settling. You'll also see it called Answer Engine Optimisation (AEO) or occasionally AI search optimisation - for now, they broadly refer to the same practice.
GEO vs SEO vs AEO - what's actually different?
| Traditional SEO | GEO / AEO | |
| Goal | Rank a webpage highly in search results | Be cited, summarised or recommended in an AI-generated answer |
| Output the user sees | A list of links to choose from | One synthesised answer, sometimes with sources |
| What earns visibility | Backlinks, on-page optimisation, page authority | Clear entity data, structured content, consistent trust signals across the web |
| Where it draws from | Your website | Your website and how you're described elsewhere online |
The important part: GEO doesn't replace SEO - it depends on it.
Generative engines still rely heavily on the same crawled, indexed web that traditional search does. A site with weak technical SEO or thin content has little chance of being cited well by AI, regardless of how "GEO-optimised" it claims to be. Think of GEO as an additional layer built on top of solid SEO foundations, not a separate discipline that replaces them.
How do generative engines actually decide what to recommend?
It helps to understand roughly what's happening behind the answer:
- Retrieval
Many AI search tools (Perplexity and Google AI Overviews especially) actively search and pull from live web content when answering a query, similar to a search engine crawling the web. - Training Data
Large language models like ChatGPT and Gemini also draw on patterns learned from the enormous volume of text they were trained on, which can include how your business is described across the web over time. - Entity Understanding
AI systems try to build a clear picture of what your business is, what it offers, and how it relates to other known entities (your industry, location, competitors). Structured data and consistent descriptions across the web make this easier. - Trust and Citation Selection
When generating an answer, the model favours sources it can extract clear, well-supported claims from - and often favours sources that are corroborated in multiple places, not just self-published claims on your own site.
This is why GEO is as much about your presence across the web - reviews, directories, press mentions, structured data - as it is about your own website's content.
Why GEO matters now
About 37% of consumers now start informational queries using AI tools or summaries rather than traditional search.
While traditional search engines like Google still maintain a massive 95% monthly reach, AI search platforms (such as ChatGPT and Gemini) are capturing deep research intent, yielding significantly higher user engagement and conversion rates when they provide direct answers.
What's not in dispute is the direction of travel: AI assistants are increasingly a starting point for research, not an afterthought. Businesses that make it easy for these systems to understand and trust them now have a real head start - the businesses that wait until GEO is mainstream will be optimising against far more competition for the same visibility.
The core pillars of Generative Engine Optimisation
- Technical foundations & structured data
Schema markup, clean site architecture and crawlability so AI systems can actually read and parse your content correctly. This is the foundation everything else sits on. - Entity clarity
Consistent, unambiguous information about who you are, what you do and where you operate - repeated clearly across your site and the wider web, so there's no conflicting signal for a model to weigh. - Authoritative, Answer-Shaped Content
Content written to directly and clearly answer the real questions your customers ask, with your expertise and credentials easy to extract and cite — not buried in marketing language. - Digital Brand Consistency & Citations
Reviews, directories, press mentions and third-party references that reinforce (rather than contradict) what your own site says about your business. This is often the most overlooked pillar, and it's the one traditional SEO tends to touch least. - Ongoing Monitoring
AI platforms and their sourcing behaviour change quickly. Visibility gained today isn't guaranteed to hold without regular tracking and adjustment.
How to start optimising your business for AI search
- Audit whether your business currently appears when you ask ChatGPT, Gemini, Perplexity and Google AI Overviews about your products, services or industry
- Add or clean up structured data (schema markup) across your key pages
- Make sure your business's name, description and offering are described consistently everywhere they appear online - your site, directories, social profiles, review platforms
- Build content that answers specific customer questions plainly, rather than only broad marketing pages
- Actively build reviews and third-party mentions - these carry real weight as external trust signals
- Track your AI visibility over time, the same way you'd track search rankings
Frequently Asked GEO Questions
No. GEO builds on strong SEO foundations rather than replacing them - generative engines still rely heavily on the same indexed web that traditional search does.
The major ones worth tracking today are ChatGPT, Google AI Overviews, Gemini and Perplexity, though the landscape is evolving quickly and it's worth reassessing periodically which platforms matter most for your audience.
Yes - arguably more easily than in traditional search right now, since GEO is still new enough that most competitors haven't optimised for it yet.
Clear structured data and consistent information often matter more here than domain authority or budget.
Ask the major platforms directly about your industry, products or services and see whether - and how accurately - you're mentioned.
This is the starting point of most GEO audits.
Ready to build your AI visibility?
Understanding GEO is one thing - implementing it across your technical setup, content and digital presence is another.
